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4` <br />g ' arvrw.energylab.com J Helena, MT 677-472-0711 • Billings, MT 800.735.4489 = Casper, WY 888-235-0515 <br />?? Gillette, WY 866-686-7175 • Rapid City, SD 888-672-1225 a College Station, Tx 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 09/09/10 <br />Project: Schwartzwalder Water Monitoring Program Work Order: C10080639 <br /> <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: A4500-F C Batch: R1366461 <br />Sample ID: MBLK Method Blank Run: MANTECH_100830A 08/30/10 07:21 <br />Fluoride ND mg/L 0.05 <br />Sample ID: LCS Laboratory Control Sample Run: MANTECH_100830A 08/30/10 07:24 <br />Fluoride 1.02 mg/L 0.10 102 90 110 <br />Sample ID: C10080818-001AMS Sample Matrix Spike Run: MANTECH_100830A 08/30/10 08:04 <br />Fluoride 1.45 mg/L 0.10 101 80 120 <br />Sample ID: C10080818-001AMSD Sample Matrix Spike Duplicate Run: MANTECH_100830A 08/30/10 08:07 <br />Fluoride 1.45 mg/L 0.10 101 80 120 0 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 8 of 21